10y^2-18y+9=0

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Solution for 10y^2-18y+9=0 equation:


Simplifying
10y2 + -18y + 9 = 0

Reorder the terms:
9 + -18y + 10y2 = 0

Solving
9 + -18y + 10y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
10 the coefficient of the squared term: 

Divide each side by '10'.
0.9 + -1.8y + y2 = 0

Move the constant term to the right:

Add '-0.9' to each side of the equation.
0.9 + -1.8y + -0.9 + y2 = 0 + -0.9

Reorder the terms:
0.9 + -0.9 + -1.8y + y2 = 0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -1.8y + y2 = 0 + -0.9
-1.8y + y2 = 0 + -0.9

Combine like terms: 0 + -0.9 = -0.9
-1.8y + y2 = -0.9

The y term is -1.8y.  Take half its coefficient (-0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
-1.8y + 0.81 + y2 = -0.9 + 0.81

Reorder the terms:
0.81 + -1.8y + y2 = -0.9 + 0.81

Combine like terms: -0.9 + 0.81 = -0.09
0.81 + -1.8y + y2 = -0.09

Factor a perfect square on the left side:
(y + -0.9)(y + -0.9) = -0.09

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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